Lawn-trimmer.



PATENTED APR. 30, 1907. s. 0'. SAWYER.

LAWN TRIMMER.

APPLICATION FILED JUNE 29, 1908.

J INVENTOR,

5"" *2 Jaw" MW I r I A TTOR/VE Y5 SUMNER O. SAWYER, OF TRAVERSE CITY,MICHIGAN.

LAWN-TRIMMER.

Specification of Letters Patent.

Patented April 30, 1907.

Application filed June 29, 1906. S rial No. 324,087.

To (LZZ whom it may concern:

Be it known that I, SUMNER O. Sawrnn, a citizen of the United States,residing at Traverse City, in the county of Grand Traverse and State oflviichigan, have invented a new and useful Lawn-Trimmer, of which thefollowing is a specification.

This invention relates to apparatus for trimming the edges of lawns andits object is to provide a machine of this character which is of simpleconstruction, can be readily manipulated, and which will effectuallyremove sod overhanging the edges of walks, roads, etc.

Another object is to provide a device of this character the cuttingparts of which are adjustable so that cuts of desired depths may beproduced.

W ith the above and other objects in view the invention consists ofsupporting wheels between which is adjustably mounted a cross barcarrying cutting devices one of which is adapted to cut into the soilclose to the edge of the walk or read while the other is adapted to cutdiagonally into the sod so as to produce a small trench. Means areprovided whereby the device may be readily manipulated.

The invention also consists of certain other novel features ofconstruction and combinations of parts which will be hereinafter morefully described and pointed out in the claims.

In the accompanying drawings is shown the preferred form of theinvention.

In said drawings: Figure 1 is a side eleva tion of the device one of thewheels thereof being removed; Fig. 2 is a plan view; Fig. is a frontelevation. Fig. 4 is a detail view of a modified form of device; andFig. 5 is a view of another modification.

Referring to the figures by characters of reference, 1 is a cross barhaving upturned parallel arms 2 at its ends each of which is slottedlongitudinally as shown at 3 and en gaged by a trunnion i which isadjustably secured within the slot. These trunnions constitute bearingsfor wheels 5. A straight kn fe 6 extends downward from the cross barpreferably at one side of the center thereof and this knife has alateral extension or head 7 at its upper end which is bolted orotherwise secured to the central portion of the cross bar 1. Arearwardly extending bowed knife 8 is preferably formed with thisextension 7 and is disposed with its point in longitudinal alinernentwith the point of the blade 6. The forward edges of both of these knivesare sharpened so that when the ma- Jhine is moved forward the kniveswill readily cut into the soil. Handles 9 are secured to the cross bar 1and by means thereof the device maybe readily manipulated.

The knives 6 and S are formed in one piece with the head of extension 7and for convenience in describing this construction of the parts I willhereinafter refer to tire knives as being integral, meaning thereby thatthey are both formed in one piece.

In using the machine the same is pushed forward and the knife 6 will cutinto the ground and is adapted to be guided along the edge of the walkor road: During this cut ting operation the blade 8 will cut into thesod and the two blades will co-act to produce a shallow trench alongsidethe walk. By reason of the peculiar shape of the knife 8 a shearingaction will be produced therelry and the sod will therefore be cutsmoothly. By loosening the trunnions within the slots 3 the cross bar 1may be adjusted vertically so as to regulate the depth of the cut. Theweight of the apparatus is preferably suflicicnt to force the knivesinto the soil and to retain them at the proper depth. Dowmvard pressureon the handles 9 however, will also serve to force the knives into thesoil and hold them properly placed. \Vhile the two knives 6 and 8 havebeen shown formed integral with the extension 7 it is to be understoodthat if preferred the knives may be separate and each provided withseparate means for securing it to the cross bar.

Instead of utilizing two wheels as shown in Figs. 1 to 3 inclusive I canif preferred construct the device as shown in Fig. 4 wherein the crossbar 10 has a wheel 11 adjustably connected to one end thereof in thesame manner as heretofore described but the depending blades 12 and 13are disposed adjacent the other end of the arm 10 and the blade 12 has alaterally extending supporl ing flange Li which is adapted to bear uponthe walk or road and slide thcrcover. This flange serves to limit thedownward cut of the knives. Also if preferrml the wheel 1.1 may bedispensed with. and a runner 15 substituted therefor.

I'Vhat is claimed is:

1 A device of the character described. com-- prising wheels, handles formanipulating the same, a cross bar connected to the wheels, and integralcutting devices carried thereby,

the lower portions of said devices being dising from the cross bar, anda curved rear- 1 wardly inclined knife secured to the cross bar,

said knives being integral and the ends of disposed in longitudinal saidknives being ahnement.

In a device of the character described the combination with wheels; of across bar supported by the wheels, handles, a straight knife secured toand depending from the cross bar, a re arwardlv inclined curved knifesecured to the cross bar at one side of the first mentioned knife andinte ral with said 2 knife, the terminals of said KHIVGS being disposedin longitudinal alinenient.

a. In a device of the character described 1 the combination with wheels;of across bar carried by said arms and bearing within the 5. A device ofthe character described. comprising a cross bar, a handle formanipulating the same, a knife connected to and depending from the crossbar, and a curved rearwardly inclined knife secured to the cross bar,the ends of said knives being disposed in longitudinal alinement, bothknives being integral.

6. In a device of the character described the combination with a crossbar, and a sup porting wheel at one end; of a handle extending from saidbar, a knife connected to and depending from the bar, a curvedrearwardly inclined knife secured to the cross bar, the ends of saidknives being disposed in longitudinal alinement and a supporting deviceupon one of said knives.

7. An attachment for lawn trimming niachines comprising a straightknife, a rear- Q wardly inclined curved knife, all portions of wheels,handles secured to and extending j from the cross bar, a straight knifesecured to and depending from the cross bar, and a rearwardly inclinedcurved knife secured to said cross bar at one side of tioned knife andintegral with said knife, the terminals of said knives being disposed inlongit udinal alinei'nent.

the first men- 3 the knives being out of alineinent except their freeends, and a head interposed between and integral with the knives.

In testimony that I claim the foregoing my own, I have hereto ainxed mysignature in the presence of two witnesses.

SUMNER O. SAIYYER.

Witnesses LEON F. Trros, W. M. KELLOGG.

